diff --git a/isdn4k-utils.spec b/isdn4k-utils.spec
index d4b1f57..218c0cc 100644
--- a/isdn4k-utils.spec
+++ b/isdn4k-utils.spec
@@ -6,7 +6,7 @@
 Summary: Utilities for configuring an ISDN subsystem
 Name: isdn4k-utils
 Version: 3.27
-Release: 3%{?dist}
+Release: 4%{?dist}
 License: GPLv2+ and GPL+ and MIT and BSD and zlib
 Group: Applications/System
 Url: http://www.isdn4linux.de/
@@ -203,7 +203,6 @@ mkdir -p %{buildroot}/dev \
          %{buildroot}%{_mandir}/man4 \
          %{buildroot}%{_mandir}/man8
 
-chmod 1777 %{buildroot}/var/spool/vbox
 make install DESTDIR=%{buildroot} \
              DATADIR=%{_datadir}/isdn \
              XAPPLOADDIR=%{app_defaults_dir} \
@@ -278,6 +277,10 @@ echo "# config files" >> %{buildroot}/etc/ppp/ioptions
 
 mv %{buildroot}/pppd %{buildroot}%{_libdir}
 
+# fix file permission
+chmod 755 %{buildroot}%{_bindir}/* %{buildroot}%{_sbindir}/*
+chmod 644 %{buildroot}%{_mandir}/man*/*
+
 %post
 /sbin/ldconfig
 %systemd_post isdn.service
@@ -295,7 +298,6 @@ mv %{buildroot}/pppd %{buildroot}%{_libdir}
 /bin/systemctl try-restart isdn.service >/dev/null 2>&1 || :
 
 %files
-%defattr(-,root,root,755)
 %dir /etc/isdn
 %dir /var/spool/vbox
 %dir /var/log/vbox
@@ -311,7 +313,6 @@ mv %{buildroot}/pppd %{buildroot}%{_libdir}
 %endif
 %{_libdir}/*.so.*
 %{_libdir}/capi/*.so.*
-%defattr(755,root,root,755)
 %{_sbindir}/avmcapictrl
 %{_sbindir}/hisaxctrl
 %{_sbindir}/icnctrl
@@ -334,7 +335,6 @@ mv %{buildroot}/pppd %{buildroot}%{_libdir}
 %{_sbindir}/vboxmail
 %dir %{_datadir}/isdn
 %{_libdir}/pppd
-%defattr(644,root,root,755)
 %doc gpl-2.0.txt README isdnlog/README.*
 %doc isdnlog/tools/zone/de/01033/zred.dtag.bz2
 %{_mandir}/man1/*
@@ -351,17 +351,14 @@ mv %{buildroot}/pppd %{buildroot}%{_libdir}
 %exclude %{_bindir}/xmonisdn
 
 %files vboxgetty
-%defattr(644,root,root,755)
 %doc vbox/examples/vboxgetty*.example
 %{_mandir}/man5/vboxgetty.conf.5*
 %{_mandir}/man8/vboxgetty.8*
 %{_mandir}/man8/vboxputty.8*
-%defattr(755,root,root,755)
 %{_sbindir}/vboxgetty
 %{_sbindir}/vboxputty
 
 %files devel
-%defattr(-,root,root)
 %{_includedir}/*
 %{_libdir}/*.so
 %{_libdir}/pkgconfig/*.pc
@@ -370,23 +367,19 @@ mv %{buildroot}/pppd %{buildroot}%{_libdir}
 %{_libdir}/*.a
 
 %files -n xisdnload
-%defattr(644,root,root,755)
 %doc xmonisdn/README
 %{app_defaults_dir}/*
 %{_mandir}/man1/xisdnload.1*
 %{_mandir}/man1/xmonisdn.1*
-%defattr(755,root,root,755)
 %{_bindir}/xisdnload
 %{_bindir}/xmonisdn
 
 %files data
-%defattr(644,root,root,755)
 %{_datadir}/isdn/*.dat
 %{_datadir}/isdn/dest.cdb
 %ghost %{_datadir}/isdn/zone-de-dtag.cdb
 
 %files doc
-%defattr(-,root,root)
 %doc isdnlog/FAQ
 %doc vbox/examples/vbox.conf.example
 %doc vbox/examples/vboxd.conf.example
@@ -400,6 +393,9 @@ mv %{buildroot}/pppd %{buildroot}%{_libdir}
 
 
 %changelog
+* Mon Jul 04 2016 Than Ngo <than@redhat.com> - 3.27-4
+- fix file permission
+
 * Thu Feb 04 2016 Fedora Release Engineering <releng@fedoraproject.org> - 3.27-3
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_24_Mass_Rebuild